(Loss) Income per Share Applicable to Common Stockholders (Tables)

12 Months Ended

Dec. 31, 2013

(Loss) Income per Share Applicable to Common Stockholders

Schedule of computations of (loss) income per share applicable to common stockholders

	For the Years Ended December 31,
(in thousands, except per share amounts)	2011			2012		2013
Basic net (loss) income per common share:
Net (loss) income	$	(2,955	)	$	3,038	$	4,962
Less: Preferred stock dividends		(2,168	)		—		—
Less: Accretion of redeemable convertible preferred stock		(37	)		—		—
(Loss) income applicable to common stockholders	$	(5,160	)	$	3,038	$	4,962
Basic (loss) income per common share	$	(0.31	)	$	0.08	$	0.13
Weighted-average common shares outstanding		16,412			36,492		37,706
Diluted net (loss) income per common share:
Net (loss) income	$	(2,955	)	$	3,038	$	4,962
Less: Preferred stock dividends		(2,168	)		—		—
Less: Accretion of redeemable convertible preferred stock		(37	)		—		—
(Loss) income applicable to common stockholders	$	(5,160	)	$	3,038	$	4,962
Diluted (loss) income per common share	$	(0.31	)	$	0.08	$	0.12
Weighted-average common shares used to compute diluted (loss) income per share		16,412			39,870		40,472

Schedule of potential common shares excluded from computation of diluted (loss) income per common share as the effect would be anti-dilutive

Outstanding stock options	6,670	2,322	2,457
Outstanding restricted stock units	—	165	535
Common stock warrants	590	10	9